Why Acura Recommends Premium Fuel

Premium fuel has a higher octane rating, which helps resist engine knock (pre-ignition) in high-compression or turbocharged engines. Acura vehicles — especially turbo models — benefit in terms of performance, efficiency, and smooth power delivery when using recommended fuel grades.

Acura Models That Typically Require Premium

Most modern Acura engine families recommend premium gas, especially on performance-oriented or turbocharged engines. Examples include:

• Acura TLX – particularly turbo and Type S variants
• Acura MDX – V6 and turbocharged trims
• Acura RDX – turbocharged SUV
• Acura Integra – especially sport trims
• Acura NSX – high-performance hybrid sports model

Check your owner’s manual or fuel door label before filling up.

What Happens With Lower Octane

Most Acura engines have sensors and engine controls that can adjust timing to run on regular gas if necessary. However, running on lower than recommended octane may lead to:

• Reduced fuel economy
• Slightly lower power output
• Possible engine knocking under load

It’s not immediately harmful short-term but consistently using lower octane can impact long-term performance.

Does Premium Really Matter?

If your Acura requires or strongly recommends premium gas, it’s best to follow that recommendation for peak performance and long-term engine care. Especially in turbocharged engines, premium fuel provides better combustion behavior and reduced knock tendency.